Remove double-spaces and trailing whitespace

Author: chorman0773

src/expressions/loop-expr.md

@@ -94,7 +94,6 @@ r[expr.loop.while.let.syntax]
 > &nbsp;&nbsp; `while` `let` [_Pattern_] `=` [_Scrutinee_]<sub>_except lazy boolean operator expression_</sub>
 >              [_BlockExpression_]
 
-
 r[expr.loop.while.let.intro]
 A `while let` loop is semantically similar to a `while` loop but in place of a condition expression it expects the keyword `let` followed by a pattern, an `=`, a [scrutinee] expression and a block expression.
 

src/expressions/method-call-expr.md

@@ -86,7 +86,6 @@ These cases require a [disambiguating function call syntax] for method and funct
 >
 > This special case may be removed in the future.
 
-
 <div class="warning">
 
 ***Warning:*** For [trait objects], if there is an inherent method of the same name as a trait method, it will give a compiler error when trying to call the method in a method call expression.

src/expressions/operator-expr.md

@@ -158,7 +158,6 @@ unsafe { f1_ptr.write(true); }
 let init = unsafe { uninit.assume_init() };
 ```
 
-
 ## The dereference operator
 
 r[expr.deref]
@@ -195,7 +194,6 @@ assert_eq!(*y, 11);
 
 r[expr.try]
 
-
 r[expr.try.syntax]
 > **<sup>Syntax</sup>**\
 > _ErrorPropagationExpression_ :\
@@ -387,7 +385,6 @@ a == b;
 ::std::cmp::PartialEq::eq(&a, &b);
 ```
 
-
 This means that the operands don't have to be moved out of.
 
 r[expr.cmp.behaviour]